This document discusses proposals to alter existing rapid transit (metro) systems to generate electricity and clean water. It proposes laying rails in a circular network with varying pier heights, collecting rainwater on pier tops. Water would flow to the lowest pier, where its kinetic energy could power a water turbine upon falling. Generated electricity and treated water could be used locally. While this could produce energy and water, the construction costs and efficiency may be low compared to existing systems.

1. The International Journal Of Engineering And Science (IJES)
|| Volume || 4 || Issue || 5 || Pages || PP.05-08 || 2015 ||
ISSN (e): 2319 – 1813 ISSN (p): 2319 – 1805
www.theijes.com The IJES Page 5
An alteration to rapid transit: futristics approach
Abhay Dixit1
Dr. Sanjay Gaur 2
,N.C.Vashitsh3
, Manvender Sharma4
,
-----------------------------------------------------------ABSTRACT----------------------------------------------------------
With the increase in population and less power to provide; it has become an utmost priority to provide solution
to these problems without hindering the environment .this research paper concentrates on altering the existing
rapid transit system also known as metro. The results of this transportation system will produce electricity and
clean water without changing the existing system of rapid transit system
KEYWORDS: rapid transit, electricity, cleans water.
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Date of Submission: 04-May-2015 Date of Accepted: 20-May-2015
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I. INTRODUCTION:
i. Rapid transit:
The Rapid transit, also known as metro, subway or underground, is a high-capacity public transport
generally found in urban cities. Metro uses electric railways system that operate on an exclusive right-of-way,
which cannot be used by pedestrians or other light and heavy vehicles, and which is constructed separately in
tunnels or on elevated railways.
Modern services on rapid transit systems are provided on selected railway lines between stations
typically using numerous electrical units on rail tracks, while some systems use guided rubber tyres , magnetic
levitation, or monorail. The stations typically have high platforms, without steps inside the trains. They are
typically incorporated with other public transport and often operated by the same public transport authorities,
but does not hinders a fully isolated light rail transit. It has an ability to transport large numbers of people
rapidly over short distances with limited use of land.
ii. Infrastructure:
Most Metro’s are electric multiple units with lengths from 3 to 10cars. Power is commonly delivered
by a third rail or by overhead wires. Most of them run on conventional steel railway tracks, although some also
use rubber tires, for example the Montreal Metro and Mexico City Metro and some lines in the Paris Metro.
Rubber tires allow steeper gradients and a softer ride, but have higher maintenance costs and are less energy
efficient.
iii. Water turbine:
A water turbine is a rotary engine that takes energy from moving water.
Water turbines were developed in the 19th century and were widely used for industrial power prior to electrical
grids. Now they are mostly used for electric power generation. Water turbines are mostly found in dams to
generate electric power from water kinetic energy.
Centrifugal pumps are a sub-class of dynamic axis symmetric work-absorbing turbo machinery.
Centrifugal pumps are used to transport fluids by conversion of rotational kinetic energy to the hydrodynamic
energy of the fluid. The rotational energy basically comes from an engine or electric motor. The fluid enters the
pump impeller along to the rotating axis and is accelerated by the impeller, flowing radially outward into a
diffuser (casing), from where it exits.
1
Author is affiliated to Maharishi Arvind College of Engg. And research centre ,Sirsi road, Jaipur
2
HoD, Civil Dept, Maharishi Arvind College of Engg. And research centre, Sirsi road, Jaipur.
3
Asst professor, Civil Dept, Maharishi Arvind College of Engg. And research centre, Sirsi road, Jaipur.
4
Asst professor, Civil Dept, Maharishi Arvind College of Engg. And research centre, Sirsi road, Jaipur.

2. An alteration to rapid transit: futristics approach
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II. THEORY:
a circle system of rails are laid down in such an order that the maximum height of one column/pier be
12m(say), is reduc3ed in order to provide a slope & with smallest pier been 8m (say) .the rain water is collected
by the pier top is transmitted to the lowest point where the height of the is less ,which creates a lot of kinetic
energy (due to gravitation), when this water is discharged from pier it creates a lot of amount of head due to
existing kinetic energy and gravitational force it experienced when it is allow to fall down ,which in turn rotates
the blade of the turbine placed at the bottom of the smallest pier.
Let, the actual power available be pa, W be the weight of water equals to 9.810kn/m3
, q equals to discharge, H
equals to gross head
Then,
Pa =wqhno
Where no =overall efficiency of the plant (80%)
Pa=9.81*q*h*no
No=80%
Pa=.80*9.81*q*h
Pa=7.84qh
Therefore,
Available energy E= (7.8484*365*24*) q*h
E= (68748.5) qh

3. An alteration to rapid transit: futristics approach
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The left over water is after passing through the turbine is stored to use it for daily consumptions, the electricity
so produced and the water collected will be used for daily consumption.
III. PROCEDURE:
 A circle network is adopted to lay tracks for the metro.
 The tallest and the smallest pier are placed at opposite to each other.
 The intermediate pier are so placed that the size of the column increases towards the tallest pier and
reduces towards the smallest pier.
 A water carrying unit mainly an open channel is provide on the pier and beneath the metro tracks in order
to guide the water towards the smallest pier.
 The water from the smallest pier is then allowed to fall down freely under the effect of gravitation force
which will create head over this section.
 The water with high velocity and head falls onto the blades of turbine which rotates the blades of turbine,
thus in this phase the mechanical energy is been created.
 The turbine is coupled with the rotor which converts the mechanical energy to electrical energy.
 The water is then carried to the treatment plant.
 After the treatment of the water, this water can be used for daily consumption.
IV. CONCLUSION:
This method of harvesting water and electricity by altering the design of the metro is useful but the cost
of construction and efficiency is less.
V. ADVANTAGE:
 Creates electricity
 Controls flood
 Provide quality water
VI. DISADVANTAGE:
 Cost of construction is high.
 Less efficient during summer.
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